<!DOCTYPE html>
<html>
  <head>
    <style>
      input:-moz-broken + label {color: red}
      label {color: green}
      input { display: none }
    </style>
  </head>
  <body>
    <input type="text" src="no-such-scheme:nothing" id="ffximage"/>
    <label for="ffximage">Text should be green</label>
  </body>
</html>
